• Human checking of the questionnaire – how do we do it? Part of the CMIP5 support problem. People always fill out metadata inappropriately (mostly by accident) – procedural problem for CMIP5. We need to have a conversation about this with CMIP5.

• Quality control of data and metadata not defined as yet by CMIP5. Whatever we do has to be clear and transparent.

• Human matching step will have to happen when new model names get added to the questionnaire/DRS. Quality control to check consistency of metadata (in questionnaire and netcdf files) and data.